S-90298A221 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise alignment and smooth rotation ensured by the 1/4" shoulder with tight diameter tolerance (±0.001")
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Secure, slip-resistant installation thanks to the knurled socket head and 1/8" hex drive
• Reliable fine-thread engagement with 10-32 UNF Class 3A threads for vibration resistance
• Consistent dimensional accuracy with Class 3A thread fit and controlled shoulder length tolerance (±0.005")
• Environmental compliance meeting RoHS 3 and REACH standards for safe, regulated use

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and durability challenges in industrial machinery. The 18-8 stainless steel material provides excellent corrosion resistance, while the 10-32 UNF fine thread and Class 3A fit ensure secure fastening in high-vibration environments like robotics, automation systems, and precision instruments. The 1/4" shoulder length with minimal tolerance allows for exact component positioning, reducing wear and improving operational smoothness. The knurled socket head enhances grip during installation, preventing tool slippage. Ideal for applications requiring high tensile strength and reliable performance, this screw supports efficient assembly and long-term reliability in demanding settings.

Specification Summary & Compliance

This shoulder screw adheres to UNF thread standards with Class 3A thread fit for precision engagement. Dimensions include a shoulder diameter tolerance of -0.001" to 0.001" and shoulder length tolerance of -0.005" to 0.005". The product is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence for industrial use.